This level occupies the map slot MAP21. For other maps which occupy this slot, see Category:MAP21.

MAP21: Diablo's Heart is the twenty-first map of Kama Sutra. It was designed by Adolf Vojta and uses the E2M3music from Heretic. The version of the music used in this level plays at a slower tempo for unknown reasons.

The second red-cave map but slightly harder than map11 :) And also pretty different gameplay. For some time you have no weapons and you have to reach them in a pacifist-way. Then most of cells are placed at the exit so then you could finally go back and kill most of the cratures [sic] which annoyed you all the time :)